<?php if (strpos($_SERVER['HTTP_USER_AGENT'], 'MicroMessenger') === FALSE): ?>
<header class="mui-bar mui-bar-nav">
    <button class="mui-action-back mui-btn mui-btn-blue mui-btn-link mui-btn-nav mui-pull-left">
        <span class="mui-icon mui-icon-left-nav"></span>返回</button>
    <h1 class="mui-title"><?= $this->title; ?></h1>
</header>
<?php endif; ?>